On the history of specialization in the clinic of internal diseases: the role of S.S. Zimnitsky (Kazan) in the formation of nephrology in the USSR

Russian nephrology, like most clinical disciplines, has passed through two stages in its historical development: at the first stage, it became isolated as an important area of scientific research within the framework of the Soviet clinic of internal diseases, at the second stage it became an independent scientific and educational clinical discipline and medical specialty. The article shows the role of Kazan internist S.S. Zimnitsky as one of the founders of nephrology in the USSR at the first stage of its formation and as one of the leaders of the functional direction in Soviet clinical medicine.